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Triboelectric voltage measurement using Oscilloscope (Model: TEKTRONIX TBS1102B) (a) and (b) indicate triboelectric potential [in volts (V)] generated in PPY mono and PPDFGO mono, respectively. Charge measurements using an analog electrometer (Model: KEITHLEY 610C). The charge measured on PPY monolayer and PPDFGO monolayer after similar mechanical agitation (compression/rubbing with nylon fabric) is shown in (c) and (d).
